According to FINRA's website, the regulator's Board is set to consider several rulemaking issues at its December 6, 2012, meeting, including this one:
Conflicts of Interest Relating to Recruitment Compensation Practices
The Board will consider a proposed rule that would require disclosure to transferring customers of recruitment compensation packages offered to induce registered representatives to move from one firm to another.
There is no publicly available text of a proposed rule at this time, or at least none that I can locate. Dan Jamieson over at Investment News has a story about this, noting that this type of disclosure has been called for in the past, but nothing was ever done. With the very scant information out there now, I'm not quite sure what significant (or even minor) harm this proposal would seek to cure or prevent. We'll have to see what the regulator's rationale is for their proposed rule at a later date.
It appears to me that this is a new proposal that has not yet been put out for comment, so before any rule is forwarded to the SEC for approval, FINRA would go through the regular rulemaking steps including publishing the proposed rule for comment, receiving and reviewing comments from the industry and public, and then consider the proposal - and any needed modifications - from there. If the Board does approve a rule at the end of that process, the rule must be approved by the SEC as well. So, we are very early in the process now, but this could be a very interesting process if it goes anywhere.